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def whatplay(them, outcome)
case them
when 1
case outcome
when 0; 3
when 3; 1
when 6; 2
end
when 2
case outcome
when 0; 1
when 3; 2
when 6; 3
end
when 3
case outcome
when 0; 2
when 3; 3
when 6; 1
end
end
end
rounds = $stdin.readlines.map(&:strip).map(&:split)
score = 0
rounds.each do |them, outcome|
ti = {?A => 1, ?B => 2, ?C => 3}[them]
oi = {?X => 0, ?Y => 3, ?Z => 6}[outcome]
score += whatplay(ti, oi)
score += oi
end
puts score
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